I need to know what the height of a 2001 supra launch ssv is with the tower folded down (heighest point)? If anybody knows this that would be great.

Don't know exacts, but I can tell you my '02 (which is the same hull & tower) fit into my 7ft garage. It had maybe 3 or 4 inches to spare?

Did you have the tongue jack all the way down?

No. At times I had it still attached to the truck (just too lazy to unhitch it)...